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Question
Which of the following cannot be used as a source for DNA fingerprinting?
Which of the following cannot be used as a source for DNA fingerprinting?
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Solution
The correct option is C Erythrocytes
DNA fingerprinting relies on the variation of repetitive sequences of DNA between different individuals to determine their uniqueness. Hence, the sample required to get the identity of the person is DNA.
Blood is a good source of human DNA. Although DNA is present in white blood cells of humans, it is absent in mature erythrocytes/ red blood cells as the latter lack nucleus.
On the other hand, saliva contains cellular debris from buccal epithelial cells and WBCs.
The hair follicle at the base of human hair contains cells rich in DNA.
The hair pulled from the body retains remnants of roots which can be used for DNA analysis.
DNA fingerprinting relies on the variation of repetitive sequences of DNA between different individuals to determine their uniqueness. Hence, the sample required to get the identity of the person is DNA.
Blood is a good source of human DNA. Although DNA is present in white blood cells of humans, it is absent in mature erythrocytes/ red blood cells as the latter lack nucleus.
On the other hand, saliva contains cellular debris from buccal epithelial cells and WBCs.
The hair follicle at the base of human hair contains cells rich in DNA.
The hair pulled from the body retains remnants of roots which can be used for DNA analysis.
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